class Aimal:
    def __init__(self, species, sound):
        if species in['猫','狗','羊','猴子','老虎','大象'] :
            self.species = species
            self.sound = sound
        else:
            self.species = None
            self.sound = None
        def speak(self):
            if self.species == None:
                print('动物园里没有该动物，游戏结束！')
                return False
            else:
                print(self.species,self.sound)
                return True
print('动物园里有什么？')
flag = True
while flag:
    s = input('请输入动物种类和叫声（使用空格隔开）：')
    list1 = s.split(' ')
    animal = animal(list1[0], list1[1])
    flag = animal.speak()

    #胡剑涛